Question

YES or NO the conditions Are or ARE NOT satisfied. The normal probability plot IS or IS NOT linear enough, since the correlation coefficent is LESS or GREATER than the critical value.

6 of 7 (0 complete) 0 his Question: 1 pt 107.7 66.3 58.3 74.0 81.2 95.8 84.6 71 B 84.8 The mean waiting time at the drive-through of a fast-food restaurant from the time an order is placed to the time the order is received is 85.6 seconds. A manager devises a new drive-through system that he believes will decrease wait time. As a test, he initiates the new system at his restaurant and measures the wait time for 10 randomly selected orders. The wall times are provided in the table to the right. Complete parts (a) and (b) below. 65.5 Click the icon to view the table of correlation coefficient critical values (a) Because the sample size is small, the manager must verify that the wait time is normally distributed and the sample does not contain any outliers. The normal probability plot is shown below and the sample correlation coefficient is known to ber 0.981. Are the conditions for testing the hypothesis satisfied? Axpected score the conditions v satisfied. The normal probability plot v than the critical value. In linear enough, since the correlation coefficient is 2- plot does not show any outliers, 1 No. 60 75 90 105 Yes -1- ? Click to select your answer(s) S 1:28 PM 7/29/2020

Answer 1

If the test statistic is greater than the critical value, then there is significant linear correlation. Furthermore, you are able to say there is significant positive linear correlation if the original value of r is positive,

Here r=0.981 (strong positive linear correlation)

YES the conditions are satisfied.The normal probabiltiy plot IS linear enough,since the correlation coefficent is GREATER THAN the critical value.

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